Kneecap would say that he's being exceedingly kind himself. He hasn't even jumped on Irahl or touched any of his stuff without permission! With all these quasi-complaints being sent his direction, he even has the decency to start putting the prism-shaped piece back in its chamber.

The question comes as a little bit of a surprise to him, though.

"Oh?" Looking out, squinting at the targets, you can practically see the gears turning in his head before he finally laughs and points up, "One of the lads blew up an obliterator. Months ago. Stuck in the ceiling ever since."

If Irahl follows his pointing, there is a target-sized piece of metal lodged in the rough stone ceiling of this chamber far above the other targets, where it was presumably flung with the force of some kind of explosion.